/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.cadoc.cqe;

import java.util.HashMap;
import java.util.Map;

public class CQE {
	
	private static Map<PatternContext, CodeQueryEngine> cqEngines = new HashMap<PatternContext, CodeQueryEngine>();
	
	public static CodeQueryEngine getQueryEngine(PatternContext context){
		CodeQueryEngine cqe = cqEngines.get(context);
		if(cqe == null){
			cqe = new CodeQueryEngineImpl(context);
			cqEngines.put(context, cqe);
		}
		return cqe;
	}
}
